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post #31 of 39 (permalink) Old 10-21-2009, 11:42 AM
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Originally Posted by wspohn View Post
I owned a Pontiac 455 HO, also on 500 ft-lbs., but that was gross. Not sure what they put out net.

The GNX was a pretty interesting car, using turbo technology to create a fairly decent performer in the middle of a pretty bleak period. It certainly doesn't have 0 - 60 times near any number of more modern cars, though. You must be quoting a contemporary article. In 1987 it was pretty darned fast. Today, a stock GXP with GMPP tune can pretty much equal it. ( GNX - 0-60 ~ 5.4 - 5.6, 1/4 in 13.8)
A GN stock was 13.8-14.0. A GNX was 13.20's stock on street tires. My friend has a GNX with 20,000 miles on the clock. Nothing but a chip change on street tires and went 12.80 @108mph. This about 14lbs of boost.

A GXP with a tune may be able to do this?? But please don't compare a GXP with the legendary GNX.

David N.
08 Saturn Sky Redline 13.29 @ 101.4mph 1.87 60ft
86 Buick Grand National 11.62 @ 115mph 1.60 60ft
http://i155.photobucket.com/albums/s...t86gn/sky9.jpg
http://i155.photobucket.com/albums/s...st86gn/Gn1.jpg
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post #32 of 39 (permalink) Old 10-21-2009, 11:50 AM
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Originally Posted by fast86gn View Post
My friend has a GNX with 20,000 miles on the clock. Nothing but a chip change on street tires and went 12.80 @108mph. This about 14lbs of boost.

A GXP with a tune may be able to do this?? But please don't compare a GXP with the legendary GNX.
I think you have to compare stock with stock. There is always someone out there with a new trick for more power, it just depends on how long you want it to last and how much power you want.

I've got a Fiero that will do similar times to the GNX...but so what?

I always wished that they had put the nice GNX engine into a more attractive lighter vehicle. Like a Fiero that weighed 600 lbs. less than the sedan they stuck it in!

1957 Jamaican MGA
1958 MGA Twincam
1962 MGA Coupe
1971 Jensen Interceptor
2007 BMW Z4M coupe
2009 Pontiac Solstice GXP Coupe
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1965 Jensen CV8
1969 MGC roadster,
1969 Lamborghini Islero S
1988 Pontiac Fiero GT

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post #33 of 39 (permalink) Old 10-21-2009, 12:12 PM
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Originally Posted by wspohn View Post
I think you have to compare stock with stock. There is always someone out there with a new trick for more power, it just depends on how long you want it to last and how much power you want.

I've got a Fiero that will do similar times to the GNX...but so what?

I always wished that they had put the nice GNX engine into a more attractive lighter vehicle. Like a Fiero that weighed 600 lbs. less than the sedan they stuck it in!
A GXP with a tune is not stock in my book. And if your Fiero runs those times it's not stock either not even close.

They did put the GN 3.8 in the 89 Trans Am and it picked up several 10ths over the GN. It still weighs about the same but better aerodynamics.

I have seen several Fiero's with the Buick SC 3800 transplant, I have even seen one with a Northstar V8 that was pretty cool.

David N.
08 Saturn Sky Redline 13.29 @ 101.4mph 1.87 60ft
86 Buick Grand National 11.62 @ 115mph 1.60 60ft
http://i155.photobucket.com/albums/s...t86gn/sky9.jpg
http://i155.photobucket.com/albums/s...st86gn/Gn1.jpg
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post #34 of 39 (permalink) Old 10-21-2009, 01:01 PM
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Originally Posted by wspohn View Post
I owned a Pontiac 455 HO, also on 500 ft-lbs., but that was gross. Not sure what they put out net.

The GNX was a pretty interesting car, using turbo technology to create a fairly decent performer in the middle of a pretty bleak period. It certainly doesn't have 0 - 60 times near any number of more modern cars, though. You must be quoting a contemporary article. In 1987 it was pretty darned fast. Today, a stock GXP with GMPP tune can pretty much equal it. ( GNX - 0-60 ~ 5.4 - 5.6, 1/4 in 13.8)
Here is some interesting reading on the subject: BuickGNX.com for Information on the 1987 Buick GNX Click on the "performance" link and see what they say. The "accepted" times were 0-60 of 5.3 and 1/4 of 13.3. But the interesting part is that Car & Driver quoted 0-60 of 4.7 (but that may have been a prototype with tweaks) However I have known at least two GNX owners that were cracking 5, and their cars were definitely not the prototypes. Here is another interesting read: Buick Grand National (The Best 80's Car)

This is the crazy thing about Buick's little know "performance division", they always tended to do things on the QT. No one really ever suspected my GS Stage 1, until they were seeing tail lights. Speaking of which here is cool video for all of you Buick fans out there:

Edit: There are times I miss the sound of that 800 CFM Quadrajet matched to the monstrous 455 exhaust just scaring the hell out of some ricer. There just isn't anything else that sounds quit like it.

Last edited by GS Stage 1; 10-21-2009 at 01:08 PM.
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post #35 of 39 (permalink) Old 10-21-2009, 01:26 PM
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A GXP with a tune is not stock in my book. And if your Fiero runs those times it's not stock either not even close.
Exactly why I mentioned the Fiero - it isn't stock, so whatever performance it may have is as relevant as the numbers you quoted for the non-stock car your friend has.

And I said "a stock GXP with GMPP tune", which is indeed stock in that you can buy a new Solstice with that tune and it is fully warrantable. I agree that any other 'tune' makes it a modified car and into the area where I sense we may agree, comparisons aren't all that meaningful.

They stuff anything they can get their hands on into Fieros, up to and including LS1s. I prefer at least a bit more stockish - I run a 3.2 turbo. I did stuff a 3.4 into an old MG, though, so I guess I'm a swapper too

1957 Jamaican MGA
1958 MGA Twincam
1962 MGA Coupe
1971 Jensen Interceptor
2007 BMW Z4M coupe
2009 Pontiac Solstice GXP Coupe
departed
1965 Jensen CV8
1969 MGC roadster,
1969 Lamborghini Islero S
1988 Pontiac Fiero GT

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post #36 of 39 (permalink) Old 10-21-2009, 09:05 PM
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Originally Posted by GS Stage 1 View Post
Here is some interesting reading on the subject: BuickGNX.com for Information on the 1987 Buick GNX Click on the "performance" link and see what they say. The "accepted" times were 0-60 of 5.3 and 1/4 of 13.3. But the interesting part is that Car & Driver quoted 0-60 of 4.7 (but that may have been a prototype with tweaks) However I have known at least two GNX owners that were cracking 5, and their cars were definitely not the prototypes. Here is another interesting read: Buick Grand National (The Best 80's Car)

This is the crazy thing about Buick's little know "performance division", they always tended to do things on the QT. No one really ever suspected my GS Stage 1, until they were seeing tail lights. Speaking of which here is cool video for all of you Buick fans out there:
Edit: There are times I miss the sound of that 800 CFM Quadrajet matched to the monstrous 455 exhaust just scaring the hell out of some ricer. There just isn't anything else that sounds quit like it.

I've got that vid... John has a fast car!

A shot of my 72 with my son.
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David N.
08 Saturn Sky Redline 13.29 @ 101.4mph 1.87 60ft
86 Buick Grand National 11.62 @ 115mph 1.60 60ft
http://i155.photobucket.com/albums/s...t86gn/sky9.jpg
http://i155.photobucket.com/albums/s...st86gn/Gn1.jpg
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post #37 of 39 (permalink) Old 10-22-2009, 12:13 AM
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Nice looking ride, fast86gn:

Odd coincidence, I lived in Nacogdoches TX for a couple of years back in the early 90s. My neighbor had his father's red 72 GS. I had a 70 GS hard top. Both cars got rear ended in separate accidents by two different knuckleheads. So we helped each other build new cars. That is where I ended up with the convertible in this link: https://www.skyroadster.com/forums/f2...78/#post387612 That is my wife and her Sky in the picture. Sadly, the Buick is no more. But it went to a happy home. I needed room back in my garage and money in the bank.
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post #38 of 39 (permalink) Old 10-22-2009, 09:38 AM
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Nice looking pair of ragtops!

Other pics of my 72 are in that thread Thanks

David N.
08 Saturn Sky Redline 13.29 @ 101.4mph 1.87 60ft
86 Buick Grand National 11.62 @ 115mph 1.60 60ft
http://i155.photobucket.com/albums/s...t86gn/sky9.jpg
http://i155.photobucket.com/albums/s...st86gn/Gn1.jpg
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post #39 of 39 (permalink) Old 10-22-2009, 10:07 AM
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Originally Posted by GS Stage 1 View Post
Nice looking ride, fast86gn:

Odd coincidence, I lived in Nacogdoches TX for a couple of years back in the early 90s. My neighbor had his father's red 72 GS. I had a 70 GS hard top. Both cars got rear ended in separate accidents by two different knuckleheads. So we helped each other build new cars. That is where I ended up with the convertible in this link: https://www.skyroadster.com/forums/f2...78/#post387612 That is my wife and her Sky in the picture. Sadly, the Buick is no more. But it went to a happy home. I needed room back in my garage and money in the bank.
Sorry to hear about your loss

That 72 I bought out of Kansas City back in... ? '99 I think? Sold in '06.

David N.
08 Saturn Sky Redline 13.29 @ 101.4mph 1.87 60ft
86 Buick Grand National 11.62 @ 115mph 1.60 60ft
http://i155.photobucket.com/albums/s...t86gn/sky9.jpg
http://i155.photobucket.com/albums/s...st86gn/Gn1.jpg
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